Improvement in arching-bricks



'.o all 'whom 'it mcy concern; i

WATSON r. (semence-WILMINGTON, DELAWARE..

Letters Patent No. 106,203, dated August 9, 1 870."

' :movEMENT Iny ARcHrN'G-Bmc'xsf The Schedule referred co-in these Letters Patent and making part of the earns;`

Beit known that I, WATSON FQQUINBY, of Wilmington, in the4 county of New Castle and State of Delewnre, have invented n new and useful -Improvevment in Archin'g-Brick; .endl do hereby declare that thej= following is' a. fnll; clear, and exact description thereof, ,which will enable others skill'edin the artto lnnkesmd nse the same', reference being had to the accompanying drawing forming part of this specilica.- t-ion, in which v. A

"figure 1` represen-ts n perspective view of au arch, composed of my improved arching-brick'.

Figure f is nperspectvc view of one of 'the bricks. Similar letters of reference indicate corresponding parte.4

This invention vhas for yits object to 'construct brick which can be used for arched roofs, ceilings, door or Th'einvcntion consists in the construction of segmental or4 wedge-shaped brick, which have grooved ends, sothatthey can rest against andlock into one nnothcnto formo` strictly self-supporting arch.

A in the drawing represents'myjsegmental'or arching-brick; The same hns a. convex-outer or npper, and concave 'inner or, lower surface,as shown in lig. 2, its sides-being straight and parallel, while its window-linings, ,withoutrequiring `forms or' othersnpends nrc rndii of `them-cs on'y which the curved surv faces `are Tormed. 'The uppernndlower surfaces rnny,

if `desi'reli,'be straight. V

Each end of catch brick has nn upright groove, which is about ns wide es both the remnin'ing'ribs a a,left :it the sids. The brick may otherwise be hollow or. solid, at will. t

Brick of this construction 4:tre put together, ns in fig. by titting'thc two contiguous ribs, e a, of an adjoining pain-into the 'grooved 'end of a.' third brick. Thereby the loternl pla-y sentirely prevented, 'and the arch produced will be entirely self-sustaining.

1 -At theend of each archfmaty be some-half bricks, A', as shown. Y i Y Il;` will-'be seen that with this construction cach brickl'is in contactwith and surrounded by six others. Having thus describe'dfmy invention, I f'clnim vas new end Patentdesire to secure by` Letters The-brick A, herein shown, when provided at each end with-thc two'radalribsa fr., and the radial groove b, said groove being eqnnlin width to the sum ofthe widths of the ribs, ns and for the purpose-'speciied lWATSON F. QUINBY. Witnesses: WM. SIINER, "J r.,

LAMES FLETCHER. 

